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ABSTRACT

A CENTRALIZED MEMORY ACCESS MODULE (CMA) THAT PROVIDES A MEANS WHEREBY THE ASSOCIATED DATA PROCESSING SUBSYSTEM (DPS) CONFIGURATION HAVING UP TO TWELVE REQUESTER MODULES (RM0-RM11) MAY BE MULTIPLEXED OR INTERFACED WITH UP TO EIGHT MEMORY MODULES (MMOMM7) IS DISCLOSED. THE CMA IS COMPRISED OF AN ARRAY OF GROUPS OF PRINTED CIRCUIT CARDS THAT ARE MOUNTED ON A SINGLE PANEL FOR BACK PANEL WIRING. THE CMA IS COMPRISED OF TWELVE SIMILAR REQUESTER GROUPS R0-R11 AND EIGHT SIMILAR MEMORY GROUPS M0-M7. EACH REQUESTER MODULE AND ITS ASSOCIATED POWER SUPPLY PS ARE WIRED TO ONLY ITS ASSOCIATED REQUESTER GROUP IN THE CMA, E.G., RM11 IS WIRED TO ONLY R11 IN THE CMA, AND EACH MEMORY MODULE AND ITS ASSOCIATED POWER SUPPLY PS ARE WIRED TO ONLY ITS ASSOCIATED MEMORY GROUP IN THE CMA, E.G., MMO IS WIRED TO ONLY M0 IN THE CMA. THUS, EACH REQUESTER MODULE AND ITS ASSOCIATED REQUESTER GROUP IN THE CMA AND EACH MEMORY MODULE AND ITS ASSOCIATED MEMORY GROUP IN THE CMA ARE FUNCTIONALLY INDEPENDENT OF EACH OTHER SUCH THAT POWER FAILURE IN ONE OF THE MODULES EFFECTS ONLY ITS ASSOCIATED GROUP IN THE CMA WHEREBY FAILURE OF ONE OR MORE BUT NOT ALL OF THE MODULES DOES NOT CAUSE DPS FAILURE. THE LOGIC DESIGN OF THE GROUPS THAT MAKE UP THE CMA ISOLATE ALL DATA, ADDRESS, CONTROL AND POWER SIGNALS FROM EACH OTHER GROUP AND FROM THE OTHER MODULES WHILE HAVING A COMMON GROUND BUS AND INTERCOUPLES DATA, ADDRESS AND CONTROL SIGNALS BETWEEN ONE REQUESTER MODULE AND ONE MEMORY MODULE, ALL UNDER CONTROL OF THE ASSOCIATED REQUESTER GROUP AND MEMORY GROUP.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.0. 687. The abstracts 01 Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofllce makes no assertlon as to the novelty of the disclosed subject matter.

PUBLISHED DECEMBER 4, 1973 T917,007 A Centralized Memory Access Module (CMA) that CENTRALIZED MEMORY ACCESS MODULE FOR provides a means whereby the associated Data Process- D l a f Univac ing Subsystem (DPS) configuration having up to twelve 3525 I t 55165 Requester Modules (RMORMll) may be multiplexed t g 1973 0 526 or interfaced with up to eight Memory Modules (MMO- i 6 3/00' MM7) is disclosed. The CMA is comprised of an array C]. 340 172 5 of groups of printed circuit cards that are mounted on a 14 Sheets Drawing. 25 Pages Specification single panel for back panel wiring. The CMA is comprised of twelve similar Requester Groups R0R11 and eight similar Memory Groups M0M7. Each Requester Module and its associated power supply PS are wired to only its associated Requester Group in the CMA, c.g., RMll is wired to only R11 in the CMA, and each Memory Module and its associated power supply PS are wired to only its associated Memory Group in the CMA, e.g., MMO is wired to only M0 in the CMA. Thus, each Requester Module and its associated Requester Group in the CMA and each Memory Module and its associated Memory Group in the CMA are functionally independent of each other such that power failure in one of the modules affects only its associated group in the CMA whereby failure of one or more but not all of the modulcs does not cause DPS failure. The logic design of the groups that make up the CMA isolate all data, address, control and power signals from each other group and from the other modules while having a common ground bus and intercouples data, address and control signals between one Requester Module and one Memory Module, all under control of the associated Requester Group and Memory Group.

Dec. 4, 1973 D. E. HAIR ET AL T91 7,007

[JIIN'I'RALIZEIJ MEMORY ACUI'ISS MODULI'l FUR A IJAIA PROCESSING SYSTEM Filed Feb. 14. 1973 14 Sheets-Sheet 1 Fig. /a

Fig. la

Fig. lb

Dec. 4, 1973 D. E. HAIR ET AL (JEN'IRAI-TZFID MEMORY ACCESS MODULF 1 FOR A DATA F) STEM m Sheets-Sheet z b: led Feb. 14, 1973 1973 D. E. HAIR ET AL T9l7,007

CENTRALIZED MEMORY ACCESS MODULE FOR A DATA PROCESSING SYSTEM Filed Feb. 14, 1973 I; Sheets-Sheet 5 DATA /ADDREss LINEs I252) DATA /ADDRESS LINEs (32 REQUESTER MEMORY REQUEST (a) CM MEMORY REQUEsT (I) MEMORY MODULE REoUEsT AcKNDwLEDeEu) REQUEST ACKNOWLEDGE) MODULE wRITE ENABLE (I) wRITE ENABLE (I) wRITE UPPER HALF woRDu) wRITE UPPER HALF woRDII),

wRITE LowER HALF WQRDII) WRITE LOWER HALF WORD).

READ ENABLE (I) READ ENABLE (i) DATA AVAILABLE (II DATA AVAILABLE (I) ADDRESS PARITY (Ii ADDREss PARITY III ADDRESS PARITY mRoRuI ADDRESS PARITY ERRORU) Rig/$553? DC PowER cABLE DC PowER CABLE MEMORY oDU POWER DATA PROTECT (I) JATA sAvE (I) -E sUPPLY SUPPLY Fig. 2

Fig. 7d

Fig. Te

Fig. 70

Fig. ?f

Fig. 7 Fig. 7b

Fig. 7g Fig. Tc

Dec. 4, 1973 R ET AL T917,007

UENTRALIZED MEMORY ACCESS MODULE FOR A DATA PROCESSING SYSTEM Filed Feb. 14, 1973 14 Sheets-Sheet 5 s ga e s gx n aggs; UPPER HALF LOWER HALF THE LEAST LOWER HALF PARITY BIT SIGNIFICANT BIT UPPER HALF PARITY an NOT INTERPRETED FOR ADDRESSING DATA WORD ADDRESS WORD REQUESTER MODULE RMII DATA BIT 1 0c POWER FLAT RIBBON REQUESTERl 4 j 60 551 Fig. 6

CMA

MEMORY GROUP DC POWER CABLE FLAT RIBBON CABLE MEMORY MODULE MMO JJQL RMII

INFO CABLE I2 RMI INFO CABLE RMII POWER CABLE I4 RMO POWER CABLE 4, 1973 E, A ET AL T917,007 CENTRALIZED MEMORY ACCESS MODULE FDR A DATA PROCESSING SYSTEM Feb. 14, 1973 14 Sheets-Sheet 6 DATA PROTECT I I o I I 5 I DATA AND ADRS. O

I I CONTROL m SONTROL c C RMII MEM. REQSI I 2 I I I m I I III I I I I I I I I I I l I I I I I I I l I 2 g 9 N I +5.5v -O I: 3 DATA PROTECT E o I DATA AND ADRS (-9 I 9, HM}

CONTROL 4 EONTROL RMI MEM REDS. Q w

DATA PROTECT t I o I l 5 I DATA AND ADRS. 9 O

RMO MEM REQS.

n er

Dec. 4, 1973 0. E HAIR ET AL L ENIRAI'T ZED MEMORY ACCESS MODULE F R A DATA PROCESSING SYSTEM l4 Sheets-Sheet 1 l Filed Feb. 14, 1973 Fig. 7d

RMII

DATA ADRS CABLE T C E T O R P Dec. 4, 1973 HAlR ET AL T917,007

CENTRAIJI ZED MEMORY ACCESS MODULE FOR A DATA Y'ROCESSING SYSTEM Filed Feb. 14, 1973 14 Sheets-Sheet l2 BIT 3| 1 MO- M3 AVAIL.

Dec. 4, 1973 ET AL T917,007

QEN'IRALJZED MEMORY ACCESS MODULE; mm A DATA PROCESSING SYSTEM Filed Feb. 14, 1973 i Sheets-Sheet 13 mo-ms Rll- MO RII M| RMH RH M2 DATA CONTROL PROTECT CABLE RH M3 22 ADRS. PAR

Dec. 4, 1973 Filed Feb.

D. E. HAIR E AL CENTRALIZED MEMORY ACCESS MODULE FOR A DATA PROCESSING SYSTEM 14 Sheets-Sheet l4 DATA PROTECT an 1&1

DATA PROTECT CABLE 28 DC PWR CABLE 26 l RMH PWR CABLE RMH MEM. REQ. MO

RMII

IOO

RMII MEMREQM? REQUESTER GROUP Rll CABLE MEM. REQ. 

